The volatility indicies use their own data as a reference point. So, for example, if BCH was dramatically up and down over the past 24 hours, but for the month prior to that it was very flat, the index would be very high. The reverse is also true, if it was dramatically up and down over the prior month but flat today, the index would be extremely low.

The index values can’t be directly compared to each other because they don’t use the same baseline data.

The data below was compiled on a per-currency basis using reports from the exchanges that saw 1% or more of the total trade volume for that currency. It is as of 1:00 p.m. US Eastern Time and includes the digital currencies with the greatest trading volume, as measured in U.S. Dollars.